DIFF Subgroup
F02D 21/08 the other gas being the exhaust gas of engine
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas > peculiar to engines having other non-fuel gas added to combustion-air > the other gas being the exhaust gas of engine
CPC:
Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas > peculiar to engines having other non-fuel gas added to combustion air > the other gas being the exhaust gas of engine
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
Child Classifications
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